GMC 2500 1993 5.7 - no top end power

Automatic analyzing the cylinder pressure waveform
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bmoody
Posts: 4
Joined: Tue Sep 19, 2017 11:26 pm

GMC 2500 1993 5.7 - no top end power

Post by bmoody » Sun Nov 12, 2017 12:56 am

Pico Scope4225 Px35+Longer
Cyl #1 Sync#1
No top end power, flat spot when acceleration from idle.
Attachments
matt.psdata
(32.27 MiB) Downloaded 103 times
IF everyone watching me diagnose, always knows what the problem is. Why am I the one diagnosing?

admin
Site Admin
Posts: 18
Joined: Sun Mar 01, 2015 3:34 pm

Re: GMC 2500 1993 5.7 - no top end power

Post by admin » Sun Nov 12, 2017 12:19 pm

Hello,
Converted file is attached
matt.p.mwf
(21.47 MiB) Downloaded 117 times

To run automatic analysis, in the USB Oscilloscope software select menu Analysis => Execute script

PS:
You did not follow the recommendations on how to press the accelerator pedal.
More info see here - YouTube - In-cylinder pressure waveform analyzing by PicoScope.

Please provide another recording of the signals, where the signals were recorded correctly, as you have already done here - Honda Accord 1998 2.3 4cyl - Px script.

bmoody
Posts: 4
Joined: Tue Sep 19, 2017 11:26 pm

Re: GMC 2500 1993 5.7 - no top end power

Post by bmoody » Sat Nov 18, 2017 5:55 pm

1993 GMC 2500 5.7 with 1998 Vortec Heads.

Pico Scope4225 Px35+Longer
Cyl #1 Sync#1
No top end power, flat spot when acceleration from idle.
Attachments
three-advance.psdata
Re-Run Test
(32.86 MiB) Downloaded 155 times
IF everyone watching me diagnose, always knows what the problem is. Why am I the one diagnosing?

admin
Site Admin
Posts: 18
Joined: Sun Mar 01, 2015 3:34 pm

Re: GMC 2500 1993 5.7 - no top end power

Post by admin » Sun Nov 19, 2017 7:54 pm

bmoody wrote:
Sat Nov 18, 2017 5:55 pm
three-advance.psdata
Hello,
Converted file is attached
three-advance.p.mwf
(19.88 MiB) Downloaded 173 times

To run automatic analysis, in the USB Oscilloscope software select menu Analysis => Execute script

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